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The island of Masbate lies just west of the province of Sorsogon in the Bicol Peninsula. The population centers are in the municipalities of Masbate (55,996), Aroroy (45,306), San Jacinto (34,185, NSO 1980), and Uson (24,817), with the national population placed at 602,257 (NSO 1990). The island is marked by relatively low-lying and discontinuous highland ranges with narrow strips of coastal lowlands. This has led to the dispersal of populations all over the country especially in Palawan. The subsistence is based on agriculture and fishing with mining in the south of Aroroy in the Conical Peak area.

Distribution of Ethnic Groups by Provinces (Arrangement: Population count)
Total National Population Total Grand Total	19,959 (NSO 1980: 274,355) 327,902 602,257
Abra	1
Agusan del N.	1,100
Agusan del S.	10
Aklan	277
Albay	116
Antique	71
Aurora	39
Bataan	323
Batangas	71
Benguet	30
Bohol	40
Bukidnon	125
Bulacan	509
Camarines S.	100
Capiz	87
Cavite	711
Cebu	411
Davao del S.	41
Davao Or.	174
Iloilo	39
Isabela	91
La Union	10
Maguindanao	10
Negros Occ.	193
Negros Or.	8
N. Cotabato	10
N. Samar	114
Nueva Ecija	10
Occ. Mindoro	753
Or. Mindoro	132
Palawan	2,602
Pampanga	62
Pangasinan	61
Quezon	722
Rizal	1,831
Romblon	567
W. Samar	243
S. Cotabato	178
S. Leyte	19
Surigao del N.	80
Surigao del S.	39
Tarlac	21
Tawi-Tawi	9
Zambales	31
Kalookan	1,012
Las Pinas	142
Mandaluyong	80
Manila	1,368
Marikina	729
Malabon	504
Makati	291
Muntinlupa	208
Navotas	182
Paranaque	389
Pasay	338
Pateros	10
Quezon City	1,762
San Juan	11
Taguig	440
Valenzuela	422